Forgot backup password need to recover without deleting data

With Samsung (and ALL of the other manufacturers) they have never had a backdoor on any of the phones since Android 6 (maybe even 5). There WAS a reset on some which used your Google account, but it's been unsupported for years at this point. The option was immediately dropped when the FBI picked a fight with Apple (and lost). The option we once had in Android (with spotty support) WILL NEVER come back again after that, because Google also sided with Apple. It's too dangerous to have it now that the FBI has made its intentions clear with the All Writs Act order attempt, and was INSTANTLY dropped by everyone who somehow still decided to have it was a good idea after that victory by Apple... Because if you can't get in and the user controls the encryption, you cannot help these agencies and can tell them to pound sand (at least in the US). Even if we found a way to make the FBI try harder to pull the same stunt, I will never support a backdoor like this out of principle and concern there will be a new law they abuse to get around the blockade of the old one. Any phone made on the Android side since is almost certainly encrypted during the OOBE setup, and it's now permanent.

That said, it may still be possible with 3rd party SW on a non-encrypted phone, but a lot of phones use the passcode AS THE ENCRYPTION KEY (or make it fully inaccessible, even to them)+passcode encryption. A lot of the phones released now use that method so if these agencies try and order something similar, it's "technologically impossible" and they cannot assist, or even push for the use of a passcode to further lock down these post Apple vs. FBI phones. The last phone I had with reversible encryption was the LG G4. NO OTHER PHONES since have had a way out.
Yes, I absolutely do feel bad about how it affects people like you, but I'm firmly against adding these backdoors back to phones since there will now be legal leverage because they got shut down via the "technological impossibility" defense. After seeing how messy things once got, I do not trust these agencies to not abuse it due to the legal obligation to assist if it can be done by the manufacturer. Having it available is far too dangerous vs. what you gain today, simply because of the All Writs Act. Apple also dropped its backdoor with iOS 8, with the last backdoored devices left running iOS 7. I decided to permanently retire my 4 because of the backdoor being present due to iOS 7 and encrypts the phones with a secure enclave (with is inaccessible to them) as well as the passcode.